Optical grade with UV cut-off up to 400 nm, greater optical purity than standard grades.

光学级紫外截止到400纳米，大于标准等级的光学纯度。

youdao

Optical grade with UV cut-off up to 400 nm, greater optical purity than standard grades.

光学级紫外截止到400纳米，大于标准等级的光学纯度。

youdao